2005-04-16 15:20:36 -07:00
|
|
|
/*
|
|
|
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
|
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
|
|
|
* for more details.
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 1994, 1995, 1996, 1999, 2000 by Ralf Baechle
|
|
|
|
|
* Copyright (C) 1999, 2000 by Silicon Graphics
|
|
|
|
|
* Copyright (C) 2002 Maciej W. Rozycki
|
|
|
|
|
*/
|
|
|
|
|
#include <linux/init.h>
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
|
#include <linux/module.h>
|
2005-10-30 15:03:48 -08:00
|
|
|
#include <linux/signal.h> /* for SIGBUS */
|
2006-01-08 01:02:05 -08:00
|
|
|
#include <linux/sched.h> /* schow_regs(), force_sig() */
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
#include <asm/module.h>
|
|
|
|
|
#include <asm/sn/addrs.h>
|
|
|
|
|
#include <asm/sn/arch.h>
|
|
|
|
|
#include <asm/sn/sn0/hub.h>
|
|
|
|
|
#include <asm/tlbdebug.h>
|
|
|
|
|
#include <asm/traps.h>
|
|
|
|
|
#include <asm/uaccess.h>
|
|
|
|
|
|
|
|
|
|
static void dump_hub_information(unsigned long errst0, unsigned long errst1)
|
|
|
|
|
{
|
|
|
|
|
static char *err_type[2][8] = {
|
|
|
|
|
{ NULL, "Uncached Partial Read PRERR", "DERR", "Read Timeout",
|
|
|
|
|
NULL, NULL, NULL, NULL },
|
|
|
|
|
{ "WERR", "Uncached Partial Write", "PWERR", "Write Timeout",
|
|
|
|
|
NULL, NULL, NULL, NULL }
|
|
|
|
|
};
|
|
|
|
|
int wrb = errst1 & PI_ERR_ST1_WRBRRB_MASK;
|
|
|
|
|
|
|
|
|
|
if (!(errst0 & PI_ERR_ST0_VALID_MASK)) {
|
|
|
|
|
printk("Hub does not contain valid error information\n");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
printk("Hub has valid error information:\n");
|
|
|
|
|
if (errst0 & PI_ERR_ST0_OVERRUN_MASK)
|
|
|
|
|
printk("Overrun is set. Error stack may contain additional "
|
|
|
|
|
"information.\n");
|
|
|
|
|
printk("Hub error address is %08lx\n",
|
|
|
|
|
(errst0 & PI_ERR_ST0_ADDR_MASK) >> (PI_ERR_ST0_ADDR_SHFT - 3));
|
|
|
|
|
printk("Incoming message command 0x%lx\n",
|
|
|
|
|
(errst0 & PI_ERR_ST0_CMD_MASK) >> PI_ERR_ST0_CMD_SHFT);
|
|
|
|
|
printk("Supplemental field of incoming message is 0x%lx\n",
|
|
|
|
|
(errst0 & PI_ERR_ST0_SUPPL_MASK) >> PI_ERR_ST0_SUPPL_SHFT);
|
|
|
|
|
printk("T5 Rn (for RRB only) is 0x%lx\n",
|
|
|
|
|
(errst0 & PI_ERR_ST0_REQNUM_MASK) >> PI_ERR_ST0_REQNUM_SHFT);
|
|
|
|
|
printk("Error type is %s\n", err_type[wrb]
|
|
|
|
|
[(errst0 & PI_ERR_ST0_TYPE_MASK) >> PI_ERR_ST0_TYPE_SHFT]
|
|
|
|
|
? : "invalid");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int ip27_be_handler(struct pt_regs *regs, int is_fixup)
|
|
|
|
|
{
|
|
|
|
|
unsigned long errst0, errst1;
|
|
|
|
|
int data = regs->cp0_cause & 4;
|
|
|
|
|
int cpu = LOCAL_HUB_L(PI_CPU_NUM);
|
|
|
|
|
|
|
|
|
|
if (is_fixup)
|
|
|
|
|
return MIPS_BE_FIXUP;
|
|
|
|
|
|
|
|
|
|
printk("Slice %c got %cbe at 0x%lx\n", 'A' + cpu, data ? 'd' : 'i',
|
|
|
|
|
regs->cp0_epc);
|
|
|
|
|
printk("Hub information:\n");
|
|
|
|
|
printk("ERR_INT_PEND = 0x%06lx\n", LOCAL_HUB_L(PI_ERR_INT_PEND));
|
|
|
|
|
errst0 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS0_B : PI_ERR_STATUS0_A);
|
|
|
|
|
errst1 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS1_B : PI_ERR_STATUS1_A);
|
|
|
|
|
dump_hub_information(errst0, errst1);
|
|
|
|
|
show_regs(regs);
|
|
|
|
|
dump_tlb_all();
|
|
|
|
|
while(1);
|
|
|
|
|
force_sig(SIGBUS, current);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void __init ip27_be_init(void)
|
|
|
|
|
{
|
|
|
|
|
/* XXX Initialize all the Hub & Bridge error handling here. */
|
|
|
|
|
int cpu = LOCAL_HUB_L(PI_CPU_NUM);
|
|
|
|
|
int cpuoff = cpu << 8;
|
|
|
|
|
|
|
|
|
|
board_be_handler = ip27_be_handler;
|
|
|
|
|
|
|
|
|
|
LOCAL_HUB_S(PI_ERR_INT_PEND,
|
|
|
|
|
cpu ? PI_ERR_CLEAR_ALL_B : PI_ERR_CLEAR_ALL_A);
|
|
|
|
|
LOCAL_HUB_S(PI_ERR_INT_MASK_A + cpuoff, 0);
|
|
|
|
|
LOCAL_HUB_S(PI_ERR_STACK_ADDR_A + cpuoff, 0);
|
|
|
|
|
LOCAL_HUB_S(PI_ERR_STACK_SIZE, 0); /* Disable error stack */
|
|
|
|
|
LOCAL_HUB_S(PI_SYSAD_ERRCHK_EN, PI_SYSAD_CHECK_ALL);
|
|
|
|
|
}
|
